<template>
  
  <div class="category">
    <!--面包屑导航-->
    <Breadcrumb></Breadcrumb>
    <div class="wrapper">
      <div class="title">产品类目管理</div>
      <div class="tree">
        <!-- 一级按钮 -->
        <el-button
          type="warning"
          style="margin-bottom: 20px"
          @click="addCategory"
          >新增一级导航类目</el-button
        >
        <!-- tree内容结构 -->
        <el-tree
          :data="data"
          show-checkbox
          node-key="id"
          default-expand-all
          :expand-on-click-node="false"
          :render-content="renderContent"
          :props="defaultProp"
        >
        </el-tree>
      </div>
    </div>
    <!--弹框-->
    <Dialog :info="info" :type="type" ref="dialog"></Dialog>
  </div>
</template>
  
  <script>
import Dialog from "./Dialog.vue";
export default {
  components: {
    Dialog,
  },
  data() {
    return {
      info: "标题",
      type: 1, //1，新增分类 2， 修改分类 3， 增加一级分类
      data: [
        {
          id: 1,
          name: "一级 1",
          children: [
            {
              id: 4,
              name: "二级 1-1",
            },
          ],
        },
      ],
      defaultProp: {
        label: "name",
      },
    };
  },

  created() {
    this.itemCategory();
  },
  methods: {
    //新增一级分类目录
    addCategory() {
      (this.$refs.dialog.dialogVisible = true), (this.$refs.dialog.input = "");
      this.info = {
        title: `新增一级分类`,
      };
      this.type = 3;
    },
    //新增
    append(data) {
      (this.$refs.dialog.dialogVisible = true), (this.$refs.dialog.input = "");
      this.info = {
        title: `新增【${data.name}】子分类`,
        cid: data.cid,
      };
      this.type = 1;
    },
    //删除
    remove(node, data) {
      //弹框提示
      this.$confirm("此操作将永久删除该分类, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          //确定删除 ，请求接口
          //执行删除接口操作
          this.$api.deleteContentCategoryById({ id: data.id }).then((res) => {
            //信息提示
            if (res.data.status == 200) {
              this.$message({
                type: "success",
                message: "删除成功!",
              });
              //刷新视图
              this.itemCategory();
            }
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });

      //信息提示，更新视图
    },

    //修改
    update(node, data) {
      (this.$refs.dialog.dialogVisible = true),
        (this.$refs.dialog.input = data.name);
      this.info = {
        title: `修改【${data.name}】的分类名称`,
        id: data.id,
      };
      this.type = 2;
    },
    renderContent(h, { node, data, store }) {
      return (
        <span class="custom-tree-node">
          <span class="name">{node.label}</span>
          <span>
            {node.level == 1 ? ( //三元表达式判断是不是一级分类
              <span>
                <el-button
                  class="mini"
                  on-click={() => this.append(data)}
                  icon="el-icon-plus"
                >
                  新增
                </el-button>
                <el-button
                  class="mini"
                  on-click={() => this.update(node, data)}
                  icon="el-icon-edit"
                >
                  修改
                </el-button>
                <el-button
                  class="mini"
                  type="danger"
                  on-click={() => this.remove(node, data)}
                  icon="el-icon-delete"
                >
                  删除
                </el-button>
              </span>
            ) : (
              <span>
                <el-button
                  class="mini"
                  on-click={() => this.update(node, data)}
                  icon="el-icon-edit"
                >
                  修改
                </el-button>
                <el-button
                  class="mini"
                  type="danger"
                  on-click={() => this.remove(node, data)}
                  icon="el-icon-delete"
                >
                  删除
                </el-button>
              </span>
            )}
          </span>
        </span>
      );
    },
    //获取分类数据
    async itemCategory() {
      let res = await this.$api.itemCategory();
      let data = res.data.result;
      //获取一级类目
      let oneArr = [];
      let otherArr = [];
      data.forEach((element) => {
        if (element.type === 1) {
          //一级分类类目
          // let obj={}
          // obj.id=element.id
          // obj.label=element.name
          // oneArr.push(obj)
          element.children = [];
          oneArr.push(element);
        } else {
          //不是一级分类的类目
          otherArr.push(element);
        }
      });
      oneArr.forEach((item) => {
        otherArr.forEach((element) => {
          if (element.type === item.cid) {
            item.children.push(element);
          }
        });
      });
      this.data = oneArr;
    },
  },
};
</script>
  
  <style lang="less" scoped>
.custom-tree-node {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  padding-right: 8px;
}

.category {
  margin: 10px;
}

.wrapper {
  padding: 10px;
  margin-top: 10px;
  background: #fff;

  .title {
    background: #f6f6f6;
    height: 50px;
    line-height: 50px;
    font-weight: bold;
    padding-left: 10px;
  }

  .tree {
    margin: 10px;

    /deep/ .mini {
      padding: 4px 10px;
      font-size: 14px;
    }

    /deep/ .el-tree-node__content {
      margin-bottom: 10px;
    }
  }

  /deep/ .name {
    width: 300px;
    display: inline-block;
  }
}
</style>